Self-heating sad-iron



Patented May 2, |899.

F. G. LAWRENCE. SELF HEATING SAD IRON.

(Application filed Dec. 22, 1897.)

' 2 Sheets-Sheet I.

(No Model.)

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Patented May 2, |899.

F. a. LAWRENCE. SELF HEATING SAD IRDN.

2 sheets-sheet 2.

(Application led Dec. 22, 1897.)

(No Model.)

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FRANK G. LAVRENCE, OF CHICAGO, ILLINOIS.

SELF-HEATING SAD-IRON.

SPECIFICATION forming part of Letters Patent No. 624,054, dated May 2, 1899.

Application filed December 22, 1897. Serial No. 66 3,016. (No model.)

To @ZZ whom, it may concern:

4Be it known that I, FRANK G. LAWRENCE, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Self-Heating Sad-Irons; and I do hereby declare the following to be a full, clear, and eXact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to sad-irons of the type which are known as selfheati ng; and it consists of certain new and useful improvements which are directed more especially to the means for generating and regulating the heat, the objects being to secure a uniform controllable temperature throughout the base or smoothing portion. of the iron and to insure economy, cleanliness, and general efficiency.

The following description is directed to the details of construction and operation of my improved sad-iron, and reference is made therein to the accompanying drawings, in which- Figure l is a vertical longitudinal sectional View of a self-heating sad-iron embodying my invention. Fig. 2 is a sectional plan view taken on line 2 2 of Fig. l. Fig. 3 is a vertical longitudinal sectional view of a self-heating iron of the goose type embodying my invention, showing a modification; and Fig. 4c is a sectional plan view taken on line 4 4 of Fig. 3.

Referring first to the construction shown iu Figs. l and 2, A denotes the base or smoothing portion of the iron, provided with the under smoothing-surface a and on its upper side with transversely-disposed ridges a a', having concave sides, the purpose of which will presently appear. The upper portion or top B of the iron rests on and is secured in any suitable manner to a liange a?, which extends upwardly from the base, and between the base and top is a chamber c, inclosed by the flan ge and having communication with the outer air through openings CLSaSin the upper portion of the flange. At the rear end of theiron is mounted a reservoir D for containing gasolene or other liquid hydrocarbon oil supplied from time to time through an opening in the top thereof controlled by a screw-plug d. In

the lower portion of the reservoiris an outlet to whichis secured one end of a pipe e, which pipe is provided with an offset and extends forwardly in the upper portion ofthe chamber to a point beyond the center of the iron, where connection is made with a vertical tube or passage e. To the upper end of said tube or passage is secured one end j of a tube f,

which tube is of L form and is provided with a vertical discharge-outlet f2, controlled by a valve g. The valve is of the turning-plug type and has a threaded portion g engaging a threaded aperture in the tube f. g2 is a stuffing-box to preclude escape of gas. The valve is manipulated byl a disk handle g3, which may be supplemented by an extension handle or arm g4. At the discharge-outlet f2 is a threaded boss f3, to which is secured a nozzle f4, having a fine orifice. This nozzle may be of any desired length. This nozzle f4 discharges into a tube or passage h, the lower end of which constitutes the burner. Secured to the lower end ol' this tube is a deiiectorplate i, which extends forwardly and rearwardly, as shown, and is concave on its under side. The purpose of said deiiector will appear in the following description of the operation.

To secure the initial vaporization of the liquid, the iron is placed upon or in contact with a stove or other heater, the result being that the pipe e is raised in temperature to a sufficient degree to vaporize the liquid contained therein. The valve is now opened and the generated vapor passes under pressure from the Valve-opening, to and through the passage h, to the burner, where, beingignited, it furnishes the heat-generatingiiame. One of the ridges a is located directly in line with the passage h, the result being that the iiame is divided and deflected equally in both directions. The employment of the deliectorplate and the additional ridges insures the breaking up of the iiame and its equal distribution throughout the entire area of the top of the base to secure a uniform temperature throughout. The flame, in addition to supplying heat for the above purpose, also maintains in the pipe e a temperature suiiicient to vaporize the liquid, and until the valve is closed and the supply of vapor eut off the generation of the vapor and the heat IOO is continuous. Obviously the size of the ame and the consequent degree of heat may be readily controlled by manipulation of the valve.

Referring now to Figs. 3 and 4, which show a tailors goose embodying my invention, it will be observed that but few modifications are made, and such modifications are principally due to the increase in the size of the iron as compared with the size of the domestic iron above described. In the construction now to be described the generating-pipe c is connected at one end with the reservoir and at its other end with the vertical tube or passage c', as in the previous arrangement; but to enlarge the capacity of the pipe for the increased generation of the vapor said pipe is materially lengthened by giving the same the form of a triangle, as at e2. Obviously other forms may be given to obtain the increase in length. This triangular portion of the pipe is located in proximity to the heater, with the result that a comparatively large body of liquid is constantly being brought into contact with the heat, with the result of a large increase in the generation of vapor. Such an arrangement is necessary owing to the fact that in lieu of the single burner employed in the above-described construction I find it of advantage to employ two burners and a separate delector for each burner. The burners, which are shown at 7L' h, are in the nature of lateral branches from the tube or passage 7L, a defleetor-ridge h2 being disposed centrally with said passage to divide the body of vapor. The vapor may discharge from the open ends of the burners h' or said ends may be closed and burner-perforations provided.

In Figs. 3 and 4 I have shown each deiiector-plate t" as provided with a depending de Hector-ridge 2, the purpose of which is to divide and spread the flame and distribute it as much as possible over the entire area of the upper surface of the base.

I have shown a different form of handle for cach of the constructions described, the handle j for the domestic iron being of arched form and removably connected at each end to the iron top. This handle j carries at one end a T-shaped hook j, which is caused to engage a plate-socket j? on the top, while the other end has a shouldered lug adapted to engage a hook on a plate j, secured at the other end of said top. In the goose-iron the handle 7o is straight, and one end is provided with a projection adapted to removably engage a recess in the upper end of an arm k3, secured to the iron top. At the other endof said top is an arm 7a4, which has at its upper end a socket 7&5 to receive the lower reduced end of a proj ection lo, carried by the handle. 707 is a hookcatch pivotally secured to a lug hs on the arm 7a4 and adapted to engage a headed pin or screw 7s on the handle to secure the latter to place. The lug ks is perforated to receive a screw by which the reservoir is secured to the iron.

It will be understood that in order to bring a greater quantity of the oil into close proximity to the heat, and thereby increase the generation of vapor, I may use the triangular form of the supply-pipe e (shown in Figs. 3 and 4) in both forms of my improved self heating sad-iron or that intended for dolnestic use, as well as that intended for tailors7 purposes.

I claim as my invention-- l. In a self-heating sad-iron or the like, the combination of a base provided at its upper side with a plurality oi' transversely-disposed deflecting-ridges, a top, an inclosed chamber between the top and base, a reservoir carried by the sad-iron, a pipe leading from the reservoir into said chamber and passing from the chamber through the top, a tube connected with said pipe, a portion of said tube extending parallel to said top and having at its under side a discharge-opening controlled by a valve, a passage through the top, the upper end of said passage being in line with the discharge-opening, and the lower end of said passage constituting the burner, and a delle@- tor-plate concaved at its underside, the edges of said plate being adjacent to the deflectingridges, substantially as and for the purpose set forth.

2. In a self-heating sad-iron or Ithe like, the combination of a base provided at its upper side with a plurality of transversely-disposed deiiecting-ridges, a top, an inclosed chamber between the top and base, a reservoir carried by the sad-iron, a pipeleading from the reservoir into said chamber and passing through the said top, a tube connected with said pipe and having a portion thereof extending parallel to the top and provided at its under side with a discharge-,opening controlled by a valve, a tube passing through said top, the opening of the tube being in line with the discharge-opening, said tube having at its lower end branch portions longitudinally disposed, the ends of said branch portions constituting the burners, and deflector-plates at the ends of said branch portions, said plates being each concaved at its under side and provided at its under outer edge with a delector-ridge, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

FRANK G. LAYV RENCE.

Vitnesses:

C. W. ScHwErcHLER, A. J. TURNBULL.

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